期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 25, 页码 10160-10172出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201916357
关键词
AIE; azetidinyl substitution; molecular engineering; PRODAN; TICT
资金
- SUTD
- SUTD-MIT International Design Centre (IDC) [T1SRCI17126, IDG31800104]
- SUTD-ZJU Research Collaboration Grant [SD201802]
- NSFC [21878286, 21908216]
- DICP [DMTO201603, TMSR201601]
Inhibition of TICT can significantly increase the brightness of fluorescent materials. Accurate prediction of TICT is thus critical for the quantitative design of high-performance fluorophores and AIEgens. TICT of 14 types of popular organic fluorophores were modeled with time-dependent density functional theory (TD-DFT). A reliable and generalizable computational approach for modeling TICT formations was established. To demonstrate the prediction power of our approach, we quantitatively designed a boron dipyrromethene (BODIPY)-based AIEgen which exhibits (almost) barrierless TICT rotations in monomers. Subsequent experiments validated our molecular design and showed that the aggregation of this compound turns on bright emissions with ca. 27-fold fluorescence enhancement, as TICT formation is inhibited in molecular aggregates.
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